Wrong var. 

perl -Mstrict -we 'eval q(x=3) or die "err $@"'

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Outputs: 

err Can't modify constant item in scalar assignment at (eval 1) line 1
+, at EOF
Bareword "x" not allowed while "strict subs" in use at (eval 1) line 1
+.

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In reply to Re: eval '...'; die "err: $!" by tybalt89
in thread eval '...'; die "err: $!" by almr

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